Bis{(1-methylimidazol-2-ylmethyl)[2-(2-pyridyl)ethyl]amine-κ3N,N′,N′′}zinc(II) bis(hexafluoridophosphate)

Four Isotypic Highly Coordinated Lanthanide Complexes of the Tripodal Ligand Bis[(2-pyridyl)methyl][(1-methylimidazol-2-yl)methyl]amine

The Ln(III) complexes (Ln = Pr, Nd, Sm and Tb) of the tripodal ligand bis[(2-pyridyl)methyl][(1methylimidazol-2-yl)methyl]amine (bpia) have been synthesized and characterized by single crystal X-ray structure determination as well as vibrational spectroscopy. The coordination spheres of the lanthanide cations are completed by three chelating nitrate anions yielding neutral complexes with a tenf...

Speciation Studies of Diorganotin(IV) Complexes with 3,3-Bis(1-methylimidazol-2-yl)propionate—Displacement Reaction by DNA Constituents

The interaction of 3,3-bis(1-methylimidazol-2-yl)propionate (BIMP) with dimethyltin(IV) dichloride (DMT), dibutyltin(IV) dichloride (DBT), and diphenyltin(IV) dichloride (DPT) is investigated at 25°C and 0.1 M ionic strength in water for dimethyltin(IV), and in a 50% dioxane-water mixture for dibutyltin(IV) and diphenyltin(IV). The stepwise formation constants of the 1 : 1 and 1 : 2 complexes f...

تعیین غلظت کریپتوفیکس 2، 2، 2 در رادیوداروی [18F]FDG

غلظت کریپتوفیکس 2،2،2 در محلول‌های [18F]FDG و استانداردهای کریپتوفیکس 2،2،2 به دو روش آشکارسازی (ترکیب کریپتوفیکس 2،2،2) با بخار ید و معرف یدوپلاتینات تعیین شد. در هر دو روش، تفاوت غلظت محلول‌های کریپتوفیکس، به صورت تفاوت در شدت رنگ لکه‌های آشکار شده بر روی TLC نمایان شد. حد تشخیص کریپتوفیکس با بخار ید و معرف یدوپلاتیتات به ترتیب ppm25 و ppm2 می‌باشد. هر دو روش را می‌توان برای پذیرش ...

Cover vol.2, no.2 October 2005

6 Concluding Remarks 5.2 Incorporate Database Categorization 5 Improving the Retrieval of Relevant Documents = 2:0m 2 2 2 2 2 2 2 2 2 2 2 = 2:0m 2 2 2 2 2 2 2 2 2 2 2

In this paper, we proposed a new, highly scalable method to solve the database selection problem when the number of local databases in a metasearch engine is very large. For single-term queries, this method guarantees all desired documents to be retrieved. Experiments were conducted to show that this method is very eeective for typical short Internet queries. We also illustrated that the our da...